Solid-state circuit breaker (SSCB): Smart protection for modern electrical systems

Why choose SSCB technology?

  • Intelligent & versatile: Advanced circuit protection with integrated energy monitoring, heating and lighting control.
  • EV charging optimization: Enhance electric vehicle charging efficiency and safety.
  • Renewable energy ready: Seamless integration with solar, wind, and other green energy sources.

What is an SSCB? A solid-state circuit breaker safeguards electrical circuits from overcurrent, overload, and short-circuit damage. Unlike traditional mechanical breakers, SSCBs use semiconductor technology to detect and interrupt faults in microseconds, reducing fire risk and equipment damage.

Why SSCBs outperform mechanical breakers

  • Ultra-fast response: Over 100x faster than conventional breakers.
  • High reliability & configurability: Programmable settings for dynamic current adjustment and smart load management.
  • Safety first: Built to meet stringent standards while enabling intelligent networking and remote monitoring.

Global market drivers

  • Projected CAGR of 37.6% (2025–2035) for SSCB adoption.
  • Demand for arc flash mitigation, smart functionality, and integration with smart grids.
Graphic showing a block diagram and several applications for SSBCs including energy storage, buildings, e-mobility, industrial automation, and cloud centers

Main block diagram

Enlarged version of solid state circuit breaker main block diagram
UG4SC075005L8S

UG4SC075005L8S

Silicon carbide (SiC) combo JFET

FCPF190N60

FCPF190N60

High voltage MOSFETs

NCD57090ADWR2G

NCD57090ADWR2G

Gate driver

NCS20166SN2T1G

NCS20166SN2T1G

Operational amplifiers

SSURHD8560W1T4G

SSURHD8560W1T4G

Rectifiers

NCP51561DADWR2G

NCP51561DADWR2G

Gate driver

NRVRGF1J

NRVRGF1J

Rectifier

NCP11187A100PG

NCP11187A100PG

Offline regulator

FOD2711A

FOD2711A

Optocoupler

NRVBSS25FA

NRVBSS25FA

Schottky rectifier

SB05-05C-TB-E

SB05-05C-TB-E

Schottky rectifier

NCP431AVSNT1G

NCP431AVSNT1G

Voltage reference

NCP189CMTWADJTAG

NCP189CMTWADJTAG

Linear regulators (LDO)

NCV8535MLADJR2G

NCV8535MLADJR2G

Linear regulators (LDO)

NCS37015MNTWG

NCS37015MNTWG

GFCI controller

SZNUD3124LT1G

SZNUD3124LT1G

Relay driver

NCS211RMUTAG

NCS211RMUTAG

Current sense amplifiers

NCH-RSL15-512-101Q40-ACG

NCH-RSL15-512-101Q40-ACG

Bluetooth Low Energy

NCN26010XMNTXG

NCN26010XMNTXG

Ethernet controller

ESD7002WTT1G

ESD7002WTT1G

ESD protection diodes

CAV24C128WE-GT3

CAV24C128WE-GT3

EEPROM memory

CAV24C128WE-GT3

NCID9410

Digital isolator